{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:19:02.771361", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2022-Mar-18_to_2022-Mar-21_259.0_47.5"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2022030002195}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "March 18 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 21 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 87555.88452683671}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["Canada", "United States"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America", "America"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": []}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 47.5}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 259.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "259.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 258.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 262.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 45.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 49.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-102.15, 48.25], [-102.25, 48.5], [-102.15, 48.75], [-102.25, 49.0], [-102.03, 49.53], [-101.68, 49.68], [-101.53, 50.03], [-101.0, 50.25], [-100.47, 50.03], [-100.25, 49.5], [-100.37, 49.2], [-100.25, 49.15], [-100.18, 49.18], [-100.03, 49.53], [-99.5, 49.75], [-99.25, 49.65], [-99.0, 49.75], [-98.75, 49.65], [-98.5, 49.75], [-98.25, 49.65], [-98.0, 49.75], [-97.47, 49.53], [-97.25, 49.0], [-97.35, 48.75], [-97.25, 48.5], [-97.47, 47.97], [-97.87, 47.8], [-97.82, 47.68], [-97.47, 47.53], [-97.25, 47.0], [-97.35, 46.75], [-97.25, 46.5], [-97.47, 45.97], [-97.82, 45.82], [-97.97, 45.47], [-98.32, 45.32], [-98.47, 44.97], [-99.0, 44.75], [-99.53, 44.97], [-99.68, 45.32], [-100.03, 45.47], [-100.18, 45.82], [-100.53, 45.97], [-100.68, 46.32], [-101.0, 46.46], [-101.32, 46.32], [-101.47, 45.97], [-102.0, 45.75], [-102.53, 45.97], [-102.75, 46.5], [-102.54, 47.0], [-102.75, 47.5], [-102.53, 48.03], [-102.18, 48.18], [-102.15, 48.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.North-America", "C.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-03-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-102.25, 48.5], [-102.02999999999997, 49.03], [-101.5, 49.25], [-100.97000000000003, 49.03], [-100.82, 48.68], [-100.47000000000003, 48.53], [-100.32, 48.18], [-100.25, 48.15], [-100.0, 48.25], [-99.47000000000003, 48.03], [-99.25, 47.5], [-99.47000000000003, 46.97], [-100.0, 46.75], [-100.25, 46.85], [-100.5, 46.75], [-100.75, 46.85], [-101.0, 46.75], [-101.52999999999997, 46.97], [-101.68, 47.32], [-102.02999999999997, 47.47], [-102.25, 48.0], [-102.14999999999998, 48.25], [-102.25, 48.5]]]]}, "2022-03-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-102.75, 47.5], [-102.52999999999997, 48.03], [-102.18, 48.18], [-102.14999999999998, 48.25], [-102.25, 48.5], [-102.14999999999998, 48.75], [-102.25, 49.0], [-102.02999999999997, 49.53], [-101.68, 49.68], [-101.52999999999997, 50.03], [-101.0, 50.25], [-100.47000000000003, 50.03], [-100.25, 49.5], [-100.37, 49.2], [-100.25, 49.15], [-100.18, 49.18], [-100.02999999999997, 49.53], [-99.5, 49.75], [-99.25, 49.65], [-99.0, 49.75], [-98.75, 49.65], [-98.5, 49.75], [-98.25, 49.65], [-98.0, 49.75], [-97.47000000000003, 49.53], [-97.25, 49.0], [-97.35000000000002, 48.75], [-97.25, 48.5], [-97.47000000000003, 47.97], [-97.87, 47.8], [-97.82, 47.68], [-97.47000000000003, 47.53], [-97.25, 47.0], [-97.35000000000002, 46.75], [-97.25, 46.5], [-97.47000000000003, 45.97], [-97.82, 45.82], [-97.97000000000003, 45.47], [-98.32, 45.32], [-98.47000000000003, 44.97], [-99.0, 44.75], [-99.52999999999997, 44.97], [-99.68, 45.32], [-100.02999999999997, 45.47], [-100.18, 45.82], [-100.52999999999997, 45.97], [-100.68, 46.32], [-101.0, 46.46], [-101.32, 46.32], [-101.47000000000003, 45.97], [-102.0, 45.75], [-102.52999999999997, 45.97], [-102.75, 46.5], [-102.54000000000002, 47.0], [-102.75, 47.5]]]]}, 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6.09697172901906, 4.851060931688892]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [4.102905116436489, 6.419177905449828, 7.585426474726262, 6.889331338839327]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.666571805851646, 6.347432460648846, 7.659924282112506, 6.302414659560895]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.937887949425544, 7.272809116166286, 9.219344519011827, 7.377836694342022]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.0142542477075054, 1.1426606388073635, 1.4059168322056823, 1.16044226151045]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.0696813745255596, 1.267496473492867, 1.5613656782464347, 1.343368020995848]}}